The Department of Transport's plan to have the Dublin metro up and running by 2012 has been criticised by Opposition parties.
Fine Gael has said the 2012 completion date is unrealistic if not impossible.
The party's transport spokeswoman, Olivia Mitchell, said Mary O'Rourke had promised in 1998 that the metro would be finished within seven years. She said Martin Cullen's timetable looked as unrealistic.
Ms Mitchell also criticised the fact there was no price tag for the metro.
The Labour Party said it welcomed the proposal to run the Metro along the Ballymun Road. But its spokeswoman, Róisin Shortall said the line should run underground not on stilts as was proposed.
She said that the people of Ballymun had already had to suffer years of disruption and inconvenience while the area was being rebuilt.
The Dublin Chamber of Commerce said confidence-building measures would be required to address the project's damaged credibility after several false starts.
